Cigarette lighter



FIG. 1 is a perspective view of a cigarette lighter according to my new design;

FIG. 2 is a front view of the lighter of FIG. 1.

FIG. 3 is a right side view of the lighter of FIG. 1 (the left side view being a mirror image thereof);

FIG. 4 is a bottom view of the lighter of FIG. 1;

FIG. 5 is a top view of the lighter of FIG. 1; and,

FIG. 6 is a rear view of the lighter of FIG. 1.

The features shown in broken lines form no part of the claimed design. 

The ornamental design for a cigarette lighter, as shown and described. 